Dental obtunder.



PATENTED JAN. 23, 1906.

W. F. BLASINGAME. DENTAL OBTUNDER. APPLICATION FILED 00T. 12. 1905.

Wslqyigia 2/z;

Inventor,

' by f.' f

Attorneys.

WESLEY F. BLA SINGAME,

or MOULTEIE, GEORGIA.

j DENTAL OBTUNDER.

`spcifieaufm of Letters Patent.

Patented Jan. 23, 1906.

Application iled October 12, 1905. Serial No. 282,468.

.To L/Z whom it may concer-n:

Be it known that I, WESLEY F. BLAsIN- GAME, a citizen of the UnitedStates, residing at Moultrie, in the county of Colquit and State ofGeorgia, have invented a new and useful Dental Obtunder, of which thefollowing is a specification.

This invention relates generally to dental obtunders, and moreparticularly to one employed in connection with a dental handpiece forpreventing the heating of the implementor wheel employed in grindingdown teeth.

The object of the invention is to simplify and improve the constructionof such implements whereby the same may be readily secured to ordetached from the handpiece and in which the passage of water employedin keeping the abrading implement cool may be readily and easilycontrolled.

With the above and other objects in view, as will appear as the natureof the invention is better understood, the same consists in the novelconstruction and combination of parts of a dental obtunder, as will behereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, andin which like characters of reference indicate corresponding parts,Figure l is a view in side elevation exhibiting a dental handpiece withthe present im` rovements combined therewith. Fig. 2 is' a ongitudinalsectional view through a portion of the attachment on an enlarged scale.Fig. 3 is a vertical transverse section taken on the line 3 3, Fig. l.

Referring to the drawings, 1 designates a dental handpiece which may beof the usual or any preferred construction, and therefore needs nodetailed description.

The gist of the present invention resides in a novel form ofwater-dropping attachment which is adapted for ready connection to anddetachment from the handpiece. This attachment comprises a tube 2,having one end reduced to constitute a nozzle 3 and its other endprovided with a collar 4, with which is connected a eXible tubing 5,that connects with a suitable source of water. (Not necessary to beshown.) As herein shown, the nozzle is deflected downward and the rearportion of the tube upward, the object for thus disposing the partsbeing to cause the nozzle to discharge the water adjacent to the centerof the abrading implement 6, which may be an emery-stone, carborundum,or any other material, and to prevent any interference between the tubeand handpiece at the point where the conductor-pipe 5 is attached.

As will be seen by reference to Fig. 2, the tube 2 is in two parts thatare connected by a valve-casing 7, in which is mounted a rectangulargate-valve 8, that projects through the casing and between the ends ofthe tube and is designed to engage at its lower end with a seat 9,formed in the inner side of the casing. The casing has combined with iteither by being formed integral therewith or otherwise a collar 10,which is adapted to engage the handpiece and to be held securely thereonby a set-screw 11. The collar will be made of a size to t the standardsizes of handpieces and may be readily positioned and removed, asrequired.

The means for actuating the valve comprises a lever 12, which isprovided intermediate of its ends with ears 13, only one of which isshown, which are pivotally connected by a rivet or bolt 14 with a pairof bosses or teats 15, (only one of which is shown,) which are rigidlysecured to the tube. The lever is shown as (lished or curved, and oneend, that disposed over the casing, is provided with a socket 16, inwhich works the up er end of the valve 8, the latter being he d in thesocket by a pivot-pin 17. The valve is caused normally to remain seatedthus to close passage through the tube 2 by a leaf-spring 18, one end ofwhich is brazed or otherwise secured to the tube adjacent to thevalve-casing and the other end of which bears against the under side ofthe free end of the lever, and thereby secures the function designed.

It will be seen from the arrangement eX- hibited that so long as thevalve is in the position shown in Fig. 2 that passage of water throughthe tube will be precluded, but upon the operator pressing down upon thelever 12 the valve will be raised to any desired height, thus permittingwater in regulated quantities to escape through the nozzle and againstthe abrading implement 6, and when its useis not desired the droppingattachment may readily be removed merely by loosening the setscrew 1land slipping the collar 10 from the handpiece.

Having thus described the invention, what is claimed is- An attachmentofthe class described com- IOS prsing a sectional Water-conducting tube,a In testimony that I claim the foregoing as valve-casing connecting thesections of the my oWnIhaVe hereto affixed my signature in 1o tube andprovided with a collar including the presence of tWo Witnesses. ygrippnv means, a valve Working in the oasing andbbetween the opposedends of the tube- WESLEY F' BLASINGAME sections, and a spring-pressedlever pvotally Witnesses: connected With one section of the tube and G.A. BAKER, with thevaive. R. G. CLARK.

